package com.operation;

import javax.servlet.http.HttpServletRequest;

public class GateIP {
	public static String getIP(HttpServletRequest request){
		 String ip = request.getHeader("x-forwarded-for");
		    if(ip == null || ip.length() == 0 ||"unknown".equalsIgnoreCase(ip)){
		        ip = request.getHeader("Proxy-Client-IP");
		    }
		    if(ip == null || ip.length() == 0 ||"unknown".equalsIgnoreCase(ip)) {
		        ip = request.getHeader("WL-Proxy-Client-IP");
		    }
		    if(ip == null || ip.length() == 0 ||"unknown".equalsIgnoreCase(ip)) {
		        ip = request.getRemoteAddr();
		    }
		    return ip;
	}
}
